PCB | January 31, 2012

Permali approves Smart Sonic

Permali approves Smart Sonic for Durostone pallets.
Permali Composites S.A., manufacturer of Durostone pallet materials has approved Smart Sonic Ultrasonic Stencil Cleaners and 440-R SMT Detergent for cleaning flux residues from reflow and wave solder pallets.

Kenny Munro, Product Manager for Durostone solder pallet materials, explains: "It was previously advised not to clean Durostone solder pallets using ultrasonic equipment as it seriously degraded the material and left it susceptible to flux attack, reducing the life-span of the pallets. Two cases had been reported but a manufacturer supplying the PCB industry did not produce the ultrasonic machines used in both instances."

"As many end-users were having problems with cleaning and did not have a budget to invest in a dedicated system just for pallets, enquiries were received from customers if they could use the ultrasonic stencil / pallet cleaners available for this purpose."

Tests were carried out in conjunction with a major ultrasonic cleaner manufacturer, Smart Sonic Corporation of Canoga Park, California, U.S.A. A batch of pallets covered in a no-clean flux were submitted to Smart Sonic for cleaning and returned to the customers’ production line. Following cleaning of the pallets, no degradation occurred so it was concluded that given the correct equipment and process settings, ultrasonics does not affect Durostone.


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